mutation

https://doi.org/10.1351/goldbook.M04074
A heritable change in the @N04255@ @ST06775@ of genomic @D01597@ (or @R05386@ in @R05386@ viruses), or in the number of @G02604@ or @C01077@ in a cell, which may occur spontaneously or be brought about by chemical mutagens or by radiation (induced mutation).
Source:
PAC, 1992, 64, 143. (Glossary for chemists of terms used in biotechnology (IUPAC Recommendations 1992)) on page 161 [Terms] [Paper]